China cut export quotas on the export of rare-earth metals (used in high-tech products), sending Molycorp up 11% initially. By the close, shares had slipped 6.6% by the close of the day as investors took profits.

Investors took profits in the licensor of 3D technologies as RealD shares tumbled 9.6%. The shares have gained 59% since going public in July at $16 each.

The charts record the net change in share price, the high, low and closing trades, and share volume for companies with noteworthy stock activity last week. In addition, the graphs depict last week's daily price activity in detail. The dotted line on some graphs denotes the stock's 200-day moving average; lack of a moving average means the shares have traded for less than that time period.

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